Eyeglasses.



C. ALTER.

EYEGLASSES. APPLIOATION FILED PEB. 2a, 1910.

of the city of New CHRISTIAN ALTER, OF NEW YORK, N. Y.

EYEGLASSES.

To all whom it may concern.'

Be it known that I, CHRISTIAN ALTER, a citizen of the United States, and a resident York, borough of Manhattan, in the county and State of New York, have invented new and useful Improvements in Eyeglasses, of which the following is a full, clear, and exact description.

The invention relates to eye glasses having a pair of lenses connected with each other by a bow spring, and the object of the invention is to provide certain new and useful improvements in eye glasses, whereby the same can be readily placed in position on the wearers nose or removed therefrom by manipulating the bow spring, to move the lenses a sufficient distance apart to allow of conveniently placing the eye glasses in position on the nose or removing the same therefrom.

For the purpose. mentioned use is made of a bearing block attached to the bow spring approximately at the middle thereof, and bell crank levers fulcrumed on the said block and extending in opposite directions, one of the arms of each lever engaging the bow spring, and the other arm of each lever extending above the bow spring and forming a nger piece to be taken hold of by the user.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this speciiication, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a front face view of the eye glasses and showing the parts in normal position; Fig. 2 is a like view of the same and showino the lenses spread; Fig. 3 is a plan view of the same; Fig. 4 is an enlarged sectional plan view of the same on the line 1 -l of Fig. l; Fig. 5 is an enlarged transverse section of the same on the-line 5 5 of Fig. l; Fig. 6 is a perspective view of one of the clamping members of the bearing block; and Fig. 7 is a like View of the other clamping member of the bearing block.

The eye glasses shown in the drawings consist of the lenses A, connected with each other by a bow spring B, and on the latter is secured a bearing block C provided with bell crank levers D and D, extending in opposite directions, each crank lever having one arm D2 provided with a transverse lug D3 adapted to engage the under side of the bow spring B, a distance to one side of the Specification of Letters Patent.

Application filed February 28, 1910.

Patented June 28., 1910. Serial No. 546,443.

clamping block C. Each crank lever D or D has an arm Dt extending upwardly to form a linger piece, adapted to be taken hold of by the user, so that when the user takes hold of the two finger pieces and presses the same toward each other, then the lugs D3 exert an upward pressure on the under side of the bow spring B, thus causing the bow spring B to bend and spread the lenses A apart, as plainly indicated in Fig. 2. IVhen the lenses are in this position, 'the user can conveniently place the eye glasses in position on the nose or remove the same therefrom, it being understood that in placing the same on the nose the user finally releases the pressure on the linger pieces D", to allow the bow spring B to return by its own resiliency to its normal position, thus moving the lenses A toward each other, to engage the clamps thereof with the sides of the nose to hold the eye glasses in position. In a like manner, when it is desired to remove the eye glasses from the nose, the operator; presses the linger pieces D* toward each other to again spread the lenses apart for disengagement of the clamps from the sides of the nose.

The clamping block C is preferably formed of two clamping members C', C2, fastened together by a screw E, and the said clamping members C and C2 are pro'- vided at their inner opposite faces with longitudinally-extending grooves C3, C4, engaging the bow spring B at opposite sides thereof, so that when the screw E is screwed up, the clamping members C and C2 are firmly clamped in position on the bow spring B, approximately at the middle thereof. The arms Dt of the bell cranks levers D, D are preferably made in the form of stirrups, to form a convenient linger piece to be taken hold of by the user.

The device for manipulating the bow spring B can be conveniently and readily fastened in position on the bow spring of eye glasses of the type mentioned and as now constructed, so that no change whatever in the eye glasses themselves is required.

The device for opening the bow spring, shown and described, is very simple and can be cheaply manufactured.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

l. Eye glasses, comprising a pair of lenses, a bow spring connecting the said lenses with CII each other, a block on the said bow spring, and a pair ot levers 'tnlernmed on the said blot-lt and engaging the said bow spring on opposite sides of the said block.

Q. Eye glasses, Comprising a pair of lenses, a bow spring Connecting the lenses with eaeh other, a bloel; clamped on the said bow spring approximately at the middle thereof, and a pair of bell crank levers Jfulernmed on the said block and extending in opposite directions, one arm et each of the said levers engaging the. under side of the bow spring, and the other arm forming a linger piece to be taken hold ot by the user.

3. An opening device for eye glasses having a pair of lenses connected with eaeh other by a bow spring, comprising a bleek attached to the bow spring approximately at the middle thereof, and a pair ot' bell Crank levers linlernmed on the said block and extending in opposite directions, one

of the arms ot each bell erank lever having a transverse lng for engagement with the under side o't the bow spring to one side ot the said block, and the other arm of each l bell Crank lever forming a finger piece to be*l taken hold of by the user.

el, An opening device for eye glasses having a pair of lenses connected with eaeh other by a bow spring, comprising ablock formed of two grooved clamping members and a screw for fastening the members together, the said Clamping members being clamped to the bow spring approximately at the middle thereof, and. a pair of bell crank levers fulcrnmed on the said bleek and extending in opposite directions, one of the arms of each bell crank lever having a transverse lug for engagement with the under side of the bow spring to one side of the said block, and the other arm of each bell Crank lever forming a finger piece to be taken hold of by the user.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHRISTIAN ALTER.

Witnesses Timo. Gr. HosTnn, PHILir D. Roma-mns. 

